Saving World with Crossovers, start with Hikigaya replacing Natsuki

Kawata Osamu transmigrated and became a God. Wonderful start, right? Unfortunately, this world is destined to be destroyed by the Abyss… The only thing he can do is try to merge many worlds together thanks to the “Children of the World.” If he can show everyone their adventures and evoke enough emotion, the worlds will merge! Kawata Osamu decided to start by replacing Natsuki Subaru with Hikigaya Hachiman!2nd Arc: Ayanokouji Kiyotaka in Redo of Healer3rd Arc: Shirogane Miyuki in Inuyasha4th Arc: Kousaka Kyousuke in Overlord — Description from novelcodex.orgFull novel: Saving World with Crossovers, start with Hikigaya replacing Natsuki — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠